某隧道爆破地震动的测试和反应谱分析
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摘要
本文对某隧道爆破施工地震动进行实测,取得各测点质点运动峰值,并对其中一个测点的竖向振动速度时域波形进行微分运算获取加速度波形,进行反应谱计算。与天然地震反应谱进行比较,得出爆破地震反应谱与天然地震反应谱不同,直接套用地震烈度表来评估爆破震动对房屋的危害程度方法是不科学的。
A tunnel blasting vibration is measured in this paper,all measuring points particle movement peak were obtained,and differential calculation for the waveform in vertical vibration speeds time domain of a measuring points was carried to get acceleration waveform for reaction spectrum calculation.Compared with response spectrum of natural earthquake,response spectrum of blasting earthquake is different from response spectrum of natural earthquake.So directly use seismic intensity scale to assess the damage degree of blasting vibration on the house is not scientific.
A tunnel blasting vibration is measured in this paper,all measuring points particle movement peak were obtained,and differential calculation for the waveform in vertical vibration speeds time domain of a measuring points was carried to get acceleration waveform for reaction spectrum calculation.Compared with response spectrum of natural earthquake,response spectrum of blasting earthquake is different from response spectrum of natural earthquake.So directly use seismic intensity scale to assess the damage degree of blasting vibration on the house is not scientific.
引文
[1]徐建.建筑振动工程手册[M].中国建筑工业出版社,2002.
[2]克拉夫RW,彭津[J].结构动力学.北京:科学出版社,1981.
[3]李德林,方向,齐世福等.爆破震动效应对建筑物的影响[J].工程爆破,2004,10(2).
[4]李彬峰,爆破振动的分析方法及测试仪器系统探讨[J].爆破,2003,20(1).
[5]冶金部安全技术研究所.GB6722-2003爆破安全规程[S]北京:中国标准出版社,2003.
[2]克拉夫RW,彭津[J].结构动力学.北京:科学出版社,1981.
[3]李德林,方向,齐世福等.爆破震动效应对建筑物的影响[J].工程爆破,2004,10(2).
[4]李彬峰,爆破振动的分析方法及测试仪器系统探讨[J].爆破,2003,20(1).
[5]冶金部安全技术研究所.GB6722-2003爆破安全规程[S]北京:中国标准出版社,2003.
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